Can you write down eight eights so that they add up to one thousand?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

How can you take 2 from 5 and leave 4?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Which digit occurred maximum times between the number 1 and 1000?

How can you make number one disappear by adding something to it?